A Guide to Troubleshooting Your Toyota Camry Fog Lights
Installing a set of Toyota Camry fog lights will help you see the road better when you're driving through dust, rain, snow, or other forms of bad weather. However, this electrical equipment can also malfunction. Here are some things that you have to do in order to troubleshoot them:
Checking the fuse box
The Camry's fuse box can be located behind the left coin tray on the passenger's side of the dashboard. You'll need to open this when your fog lights stop working because malfunctioning electrical equipment can be caused by a broken fuse. Check the fog light's fuse to see if its wiring is still intact, and if it isn't, replace it with a new one. Make sure you've seated the fuse properly before shutting the fuse box and turning on the fog lights.
Wiring aftermarket fog lights
Toyota's production methods will give you a Camry with a bumper that already has spaces for aftermarket fog lights, but its factory hasn't configured the wiring to carry any additional electrical load. This means that your Toyota Camry fog lights might burn the wiring out if you wire them directly to the headlights. Use an extra relay to the low beam or wire an additional switch to make sure that your new fog lights can get the power they need without causing problems for the rest of your lighting system.
Using a voltmeter on the fog light circuit
The Camry's fog lights get their electricity from your battery. This charge travels through a lot of wires and relays before it gets to the actual fog light bulbs. You'll need to check this circuit with a voltmeter when you find that you're not getting any power to the bulbs. Begin doing so by turning on your fog lights and opening your hood. Then, place the voltmeter's black-wired tip onto a metal part near your fog light switch. Afterwards, place the red-wired tip onto the in terminal of the switch. If you don't get a reading on your voltmeter's display, the wiring between the switch and the fuse is faulty. If you do get a reading, move on to the out terminal and check your voltmeter. If you don't get a reading, then the fault lies with the fog light switch itself. Afterwards, test the fog light units individually. If you don't get a reading from one of them, your problem lies with that unit. If you do get a reading, then your problem lies with the wires in between the unit and the switch.